Last updated: 29 August 2026
1. What Liibro Publishes
Liibro publishes independent educational digital guides created with the assistance of artificial intelligence. Every guide is compiled from published research, manufacturer guidance, public standards and general subject knowledge, and is provided for general educational and informational purposes only.
Nothing in any guide, or anywhere on this website, constitutes professional mechanical, electrical, medical, safety, legal or financial advice. No statement here has been evaluated by any regulatory authority. Liibro is not affiliated with, endorsed by or associated with any manufacturer, utility, retailer, trade body or public agency, and no brand name that appears in a guide implies any relationship with its owner.
2. Doing The Things We Describe
Some of our guides describe tasks that carry real physical risk — work involving electricity, combustion, fuel gas, pressurised systems, water, heights, tools, vehicles, machinery or open water. You undertake any hands-on task described in any of our guides entirely at your own risk.
You are responsible for following the relevant manufacturer's documentation, your local codes, and current safety guidance. Certain work is restricted by law to certified or licensed professionals in most jurisdictions. Always consult a qualified professional when in doubt, never disregard professional advice because of something you have read in one of our guides, and never bypass or defeat a safety device.
3. Results
Where any material mentions savings, service life, durability or results — including any figure in a guide's title — these are illustrative and aspirational, not promises. Individual results vary depending on the equipment or subject in question, its age and condition, the circumstances of use, and how closely the guidance is followed. Some situations will not improve regardless of care.
Any prices quoted are ranges gathered from public cost surveys at the time of writing. They are not quotes, and they are not offers.
4. Guide-Specific Notices
The sections below apply in addition to everything above, to the guide named in each.
The 30-Year HVAC Bible
Heating and cooling equipment involves mains electricity, combustion, fuel gas and pressurised refrigerant. Work on refrigerant circuits requires federal certification in the United States and there is no exemption for a homeowner working on their own house; work on gas piping and gas valves is separately licensed almost everywhere. This guide explains where that line falls and repeatedly tells the reader not to cross it — that guidance is part of the product and following it is the reader's responsibility.
If you ever smell gas, leave the building immediately, touch no switch, and call your gas utility and emergency services from outside. Carbon monoxide has no smell; this guide is not a substitute for working carbon monoxide alarms, and nothing in it should delay anyone from calling their gas utility or emergency services.
Nothing in this guide is a diagnosis of your equipment, and no reading you take yourself replaces measurement by a licensed technician with proper instruments.
The 500K-Mile Car Care Bible
This guide is educational material about vehicle maintenance, written for a general audience and created with the assistance of artificial intelligence. It is not a substitute for your vehicle’s owner manual, its manufacturer service schedule, or a qualified mechanic, and it is not affiliated with, endorsed by or connected to any vehicle manufacturer, parts brand or repair chain named in it.
Working on a vehicle carries real risk. Jacking a car, running an engine in an enclosed space, and handling fuel, hot coolant, brake fluid, batteries and airbag components can cause serious injury or death. Never work under a vehicle supported only by a jack. Brake, fuel, airbag and high-voltage hybrid systems are not owner-serviceable and the book says so where it matters. Where any instruction here conflicts with your manufacturer’s documentation, follow the manufacturer.
Repair prices quoted are US market ranges at the time of writing and vary by region, vehicle and shop. Mileage figures describe what consistent maintenance can make possible, not a guarantee about any particular vehicle. You are responsible for deciding what work to attempt and what to hand to a professional.
The 360 Boat Care Protocol
This guide is educational material about boat inspection, maintenance and ownership costs, written for a general audience and created with the assistance of artificial intelligence. It is not a substitute for your engine and vessel manufacturer’s documentation, an accredited marine surveyor, or a qualified marine technician, and it is not affiliated with, endorsed by or connected to any boat builder, engine maker or marina named in it.
A pre-purchase inspection you carry out yourself is not a marine survey. Nothing in this guide replaces an accredited surveyor, and no result from a walk-around described here should be relied on for an insurance, finance or purchase decision on its own.
Boats carry inherent risk of drowning, fire, explosion, carbon monoxide poisoning and electric shock. Fuel systems, propane, exhaust and carbon monoxide, shore power and DC electrical work, hauling and blocking, and any vessel taking on water are jobs for a qualified professional. Carbon monoxide has no smell; nothing here is a substitute for working CO alarms aboard. Follow U.S. Coast Guard requirements and your manufacturer’s documentation wherever they conflict with anything written here.
Costs, service intervals, insurance practice and regulations reflect the United States market at the time of writing and change over time. Engine-hour figures describe what consistent maintenance can make possible, not a guarantee about any particular vessel.
The 10-Day Blackout Power Bible
The 10-Day Blackout Power Bible is an independent educational digital product created with the assistance of artificial intelligence. All content — the ebook and the website copy — is provided for general educational and informational purposes only and is compiled from published research, manufacturer guidance, and general knowledge of home backup power. Nothing in it constitutes professional electrical, mechanical, medical, safety, legal or financial advice, and no statement in it has been evaluated by any regulatory authority.
Electrical work carries a risk of death, fire and serious injury. Connecting any generator or battery system to a home's wiring is regulated work in most jurisdictions and is subject to local codes and inspection. Connecting a generator to house wiring without properly listed transfer equipment can energise the utility lines outside your home and kill a utility worker. Never attempt it. Where this book describes transfer switches, interlock kits, inlet boxes or panel work, it does so to help you understand your options and have an informed conversation — not to qualify you to perform the work. Any work on a service panel should be carried out by a licensed electrician and permitted and inspected where your jurisdiction requires it.
Engine-driven generators produce carbon monoxide, which is odourless and can kill within minutes. Never operate a generator indoors, in a garage, in a basement, in a crawlspace, or near any window, door or vent, even with doors or windows open. Follow the manufacturer's stated clearances and use working carbon monoxide alarms. Fuels — gasoline, propane and natural gas — are flammable and, in the case of natural gas and propane, can accumulate and explode. Never modify a generator's fuel system or improvise a gas connection.
Batteries can vent, overheat and cause fire if damaged, short-circuited, or charged outside their stated temperature range. Follow the manufacturer's instructions for the specific product you own, including fusing, cable sizing, ventilation and charging limits. Product names, specifications, capacities, intervals and prices mentioned anywhere in the book were accurate to the best of our knowledge at the time of writing and change without notice; always verify against the current documentation for your own equipment, which supersedes anything written here.
If anyone in your household depends on mains-powered medical equipment — an oxygen concentrator, a ventilator, a powered wheelchair, refrigerated medication or any other life-sustaining device — do not rely on this book, or on any backup power system, as your plan. Speak to your physician and your equipment supplier, and register with your utility company's medical priority programme where one exists. Backup power can fail.
Where any material mentions durations, savings, capacities or results — including the "10 days" figure in the title — these are illustrative estimates only. Actual results vary considerably depending on the equipment, the loads, the fuel available, the weather, the condition of the hardware and how closely the guidance is followed. No outcome is promised or guaranteed. All products sold are digital ebooks delivered by download.
The Million-Mile Motorhome Care Bible
The Million-Mile Motorhome Care Bible is an independent educational digital product created with the assistance of artificial intelligence. All content — the ebook and this website’s copy — is provided for general educational and informational purposes only and is compiled from published research, manufacturer guidance and general knowledge of recreational vehicles. Nothing in it constitutes professional inspection, mechanical, safety, legal, insurance or financial advice, and no statement in it has been evaluated by any regulatory authority.
This guide is not a pre-purchase inspection and does not replace one. It says so repeatedly and it names the inspection levels to buy and when, including the separate chassis inspection an RV inspector does not perform. No walkaround you carry out yourself should be relied on alone for a purchase, finance or insurance decision on a vehicle of this value.
Getting onto an RV roof, or under a coach, is how people are seriously injured or killed. The book deliberately teaches the roof and underside checks to be done from the ground, and where it says to hire somebody, that guidance is part of the product and following it is the reader’s responsibility. Never work under a vehicle supported only by a jack or by its own levelling system.
Hydraulic and electric slide-outs close with several thousand pounds of force and have no clutch and no pressure sensor. Propane, engine exhaust and generator exhaust all produce carbon monoxide, which has no smell and can kill within minutes; nothing here is a substitute for working carbon monoxide and propane alarms in the coach. House and chassis electrical systems, propane systems, brakes, steering and suspension are jobs for a qualified technician.
Prices, service intervals, engine and chassis specifications, tax and titling practice and dealer fees reflect the United States market at the time of writing and change over time; verify anything before you rely on it. Mileage figures — including the “million-mile” in the title — describe what consistent maintenance can make possible on some drivetrains, not a guarantee about any particular coach. All products sold are digital ebooks delivered by download.
The 30-Year Mower Bible
The 30-Year Mower Bible is an independent educational digital product created with the assistance of artificial intelligence. All content — the ebook and this website’s copy — is provided for general educational and informational purposes only and is compiled from published research, manufacturer literature and general knowledge of outdoor power equipment. Nothing in it constitutes professional mechanical, safety, legal or financial advice, and it is not affiliated with, endorsed by or connected to any manufacturer, transaxle maker, engine maker or dealer named in it.
Mower blades rotate fast enough to kill. Disconnect the spark plug lead and remove the key before going anywhere near a deck, a blade or a discharge chute, and never work under a raised machine or a raised deck that is not properly supported on stands. Exhausts and engine components stay hot long after shutdown; gasoline is flammable and its vapour more so; and lead-acid batteries can produce explosive gas and cause burns.
A riding mower can roll on a slope, and a rollover on a machine without a rollbar is frequently fatal. Where this book describes measuring your own ground and testing whether a machine holds on it, it does so to help you decide what is safe to mow and what is not — not to qualify you to mow ground the manufacturer excludes. Follow the slope limits in your own operator’s manual, which supersede anything written here, and use the seatbelt where a rollbar is fitted.
Model numbers, torque ratings, service intervals, warranty terms, fuel specifications and prices reflect manufacturer literature and the United States market at the time of writing and change without notice; verify anything against the current documentation for your own machine, which supersedes anything written here. Where any material mentions service life, savings, hours or cost per hour — including the “30 years” in the title — these are illustrative estimates only, and outcomes vary with the machine, the ground, the hours put on it and how closely the guidance is followed. All products sold are digital ebooks delivered by download.
5. Contact
Questions about anything on this page: contact@liibro.com.